21125+4552
- Unique Name: 21125+4552ES 1273AC
- RA: 21 12 29.35
- Dec: +45 51 36.2
- Discoverer: ES
- Discoverer Number: 1273
- Components: AC
- First year: 1913
- Last year: 2003
- Observations: 4
- First position angle: 9
- Last position angle: 7
- First separation: 38.2
- Last separation: 37.4
- Mag first component: 7.7
- Mag second component: 12.4
- Spectral type: G5
- Primary proper motion RA: 0
- Primary proper motion DEC: -10
- Secondary proper motion RA:
- Secondary proper motion DEC:
- Durchmusterung:
- Notes: